Sinusitis is inflammation of the paranasal sinuses, which may be due to infection, allergy, or autoimmune issues. Most cases are due to a viral infection and resolve over the course of 10 days. It is a common condition; for example, in the United States more than 24 million cases occur annually.
Sinusitis (or rhinosinusitis) is defined as an inflammation of the mucous membrane that lines the paranasal sinuses and is classified chronologically int...
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Sinusitis is inflammation of the paranasal sinuses, which may be due to infection, allergy, or autoimmune issues. Most cases are due to a viral infection and resolve over the course of 10 days. It is a common condition; for example, in the United States more than 24 million cases occur annually.
Sinusitis (or rhinosinusitis) is defined as an inflammation of the mucous membrane that lines the paranasal sinuses and is classified chronologically into several categories:).
1. acute rhinosinusitis – a new infection that may last up to four weeks and can be subdivided symptomatically into severe and non-severe; 2. recurrent acute rhinosinusitis – four or more separate episodes of acute sinusitis that occur within one year; 3. subacute rhinosinusitis – an infection that lasts between four and 12 weeks, and represents a transition between acute and chronic infection; 4. chronic rhinosinusitis – when the signs and symptoms last for more than 12 weeks; and 5. acute exacerbation of chronic...
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